The floodlights act as light and the ground acts as a screen when the football is kept on the ground. When the ball is kicked high in the air, the distance between the screen(ground) and the object(football) is so much that the shadow is not cast as well as not visible.
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The floodlights act as light and the ground acts as a screen when the football is kept on the ground. When the ball is kicked high in the air, the distance between the screen(ground) and the object(football) is so much that the shadow is not cast as well as not visible.